Vise.



Patented Oct. 18,1910.

Y .oo/mbf DENNIS PARKS, OF ST. LOUIS, MISSOURI.

VISE.

massi.

Specification of Letters Patent.

Patented Got. 18, 1910.

Application filed July 6, 1909. Serial No. 506,037.

To all whom 'it may concern:

Be it known that I, DENNIS PARKS, a citi- Zen of the United States,residing in the city of St. Louis and State of Missouri, have invent-ednew and useful Improvements in Vises, of which the following is aspecification.

This invention relates to an automatically operating vise intended moreespecially for use in connection with boring implements, such as drills,but being useful in various applications where a body is to be grippedand held stationary while being operated upon.

In the accompanying drawing Figure 1 is a view in side elevation of myimproved vise, certain parts of a drill being shown in dotted lines toillustrate the method of use of the device. Fig. 2 is a top plan view ofthe vise on an enlarged scale. Fig. 3 is substantially a transversesectional view taken onv a line at one side of the device, jaws of thevise being shown .in elevation, and certain guide pins being shown insection, and Fig. 4 is a sectional view on'the line 4-4 of Fig. 3.

The device comprises a base 1, having on opposite sides elongated orother apertures 2, by means of which it may be suitably secured on asuitable support, such as the bed 3 of a drill press. Rising from thebase 1, and preferably, though not necessarily, formed integra-ltherewith, are two side members 4, which with the base form the frame ofthe machine. Each of the side members 4 has in its upper side a large V-shaped recess which extends from opposite ends of each side to themiddle of the side member, and thus provides two inclined ways 5 onwhich the jaws (3 of the vise are adapted to slide. Each of the sidemembers 4 is provided near the edge of each of the ways 5 with a lixedstud 7 which projects inward a short distance beyond the inner face ofthe side members as shown in Fig. 4. Each of the jaws 6 is preferablyprovided with a series of stepped and interdental recesses 8 toaccommodate, and form gripping surfaces for, various sizes of objects.The jaws rest upon the inclined ways 5, and have a central reducedportion forming a rib 9 which fits snugly, but so as not to bind, in thespace between the side members 4. Each of these ribs is provided onopposite sides with a longitudinally-disposed groove 10, each of whichreceives a stud 7 by means of bases 1T of the cradle.

edected by the force of gravity.

which the jaws are guided to move in right lines, the said studspreferably having straight parallel sides to better perform the guidingfunction, as will be understood.

11 indicates a member which I term a cradle, which consists of twosemicircular sides 12 united at their upper ends by crosspieces 13.

14 indicates a lever which is pivoted at its inner end, as indicated at15, between the side members 4, and intermediate its ends between thesides 12 of the cradle 11, indicated at 1G. The pivot 16 is locatedcentrally of the cradle 11, as respects distance from its ends, and byraising or lowering the lever 14 the cradle 11 may be raised or lowered.Each of the sides 12 of the cradle is recessed in its upper portion in amanner to provide a flat base 17 extending parallel with the base 1.Each of the jaws f3 is provided at its lower end with a flat surface 18which normally rests upon the Projecting rearwardly and centrally fromeach of the jaws 6 is an arm 19, which arms project between the sides 12of the cradle and are adapted to be engaged on their upper sides by thecross-pieces 13 of the cradle. Then the cradle 11 is elevated byraising-the lever 14 thejaws G will likewise be raised and also causedto diverge. As soon as the lever 14 is released the will tend to slidedown the ways 5 and consequently to approach each other, this actionbeing automatic and A body, such as indicated in dotted lines by 20,having been placed between the `jaws at a proper height thereon,according to its size, when 'the lever 14 is released the jaws willaut-omatically grip the object and the harder the object is pressedupon, as in being bored by a drill 21, the firmer the jaws will grip thebody. If, however, from the nature or shape of the body to be gripped bythe vise, or from lack of pressure upon the body, as when the drill 21has passed through it, or when the drill is being withdrawn, the jaws donot grip the body with sufficient firmness to hold it from turning orother movement, the operator may increase the grip ofthe jaws bypressing down on the lever 14, in which operation the cross-pieces 13will engage the upper sides of the arms 19, and thereby press the jawsmore firmly toward each other as will be understood.

The parts of the vise are of metal. The

base and side members, the cradle, and each of the jaws, arerespectively made as integral structures.

I claim:

l. A vise comprising a base, a frameA thereon affordingoppositely-disposed inclined ways converging toward said base, and a jawmounted to slide on each of said ways, said jaws, when raised, beingfree to slide down said ways under the action of gravity, and beingprovided with corresponding stepped recesses affording horizontalsupporting, and vertical gripping surfaces.

2. A vise comprising a base, a frame thereon affordingoppositely-inclined ways converging toward said base, a aw mounted toslide on each of said ways, means for simultaneously raising said jaws,the latter, when raised, being free to slide down said ways under theaction of gravity.

3. A vise comprising a base, a frame thereon affordingoppositely-inclined ways converging toward said base, a jaw mounted toslide on each of said ways, said jaws, when raised, being free to slidedown said ways under the action of gravity, and means for simultaneouslyraising or lowering said jaws.

l. A vise comprising a base, a frame thereon affordingoppositelydnclined ways converging toward said base, a jaw mounted toslide on each of said ways, guides for each of said jaws, said jaws,when raised, being free to slide down said ways under the action ofgravity, and means for simultaneously raising said aws.

5. A vise comprising a base, a frame thereon affordingoppositely-inclined ways, a jaw mounted to slide on each of. said ways,guides for each of said jaws, said aws, when raised, being free to slidedown said ways under the action of gravity, and means pivj otallymounted on the vise and associated, but unconnected, with said jaws, forsimultaneously raising the same.

G. A vise comprising a base having parallel side members extendingupward therefrom, each of which is provided on its upper side withoppositely-inclined ways, jaws mounted to slide on said ways, each ofsaid jaws being provided with longitudinallyw disposed grooves, studs insaid side members engaging in said grooves, and means for raising saidaws.

'7. A vise comprising a base, a frame thereon affordingoppositely-inclined ways, a pair of jaws mounted to slide on said ways,said jaws, when raised, being free to slide down said ways under theaction of gravity, guides for said jaws, a cradle supporting said jawsat their lower ends, but independent thereof, and means for raising andlowering said cradle.

S. A vise comprising a frame affording oppositely-inclined ways, a pairof self-closing jaws slidably mounted on said ways, guides for saidjaws, each of said jaws hav ing on its upper side gripping surfaces andon its under side an outwardly-projecting arm, a cradle mounted tosupport said aws at their lower end and having its opposite endsextending over said arms, and means for raising and lowering saidcradle.

9. A vise comprising a frame affording oppositely-inclined ways, jawsmounted to slide on said ways,and having gripping surfaces on theirupper sides, guides for said jaws, arms projecting outwardly from theunder side of each of said jaws, a lever pivotally mounted at one end insaid frame, acradle pivotally mounted on said lever intermediate theends of the latter, said cradle being adapted to engage the lower endsof said jaws and the upper sides of said arms, whereby when said leveris raised or lowered the jaws may be made to diverge or approach eachother respectively.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

DENNIS PARKS.

lVitnesses BRUCE S. ELLIOTT, STELLA HILL.

